Mobile telephone button



FIG. 1 is a perspective view of a mobile telephone button showing my new design;

FIG. 2 is a top view thereof;

FIG. 3 is a front view thereof, the back view being symmetrical thereof; and,

FIG. 4 is a right side view thereof, the left side being symmetrical thereof.

The broken lines in the figures represent unclaimed environmental structure.

The bottom of the surface of the button is unornamented.

The front and back views are symmetrical; and the right side and left side views are symmetrical. 

The ornamental design for a mobile telephone button, as shown and described. 